Obama had lunch with the Queen and the DoE and will have dinner with the Duke and Duchess of Cambridge. Where are the PoW and the Duchess of Cornwall ?

He's having dinner with The Duke and Duchess and Prince Henry. Frankly i understand why he visited The Queen for lunch, i don't know why he's with the Cambridge and Henry tonight. He's spent most of his afternoon plugging Brexit for Cameron. It's not a state visit, so Charles and Camilla don't need to be there.

I was watching the Obama's arrival to meet HM and Prince Philip and noticed that Michelle did not curtsy to the Queen. Should she have?

No, she's the wife of a head of state.

When the Kennedys visited the Queen back in the early 60's Jacqueline was given that advice and did not curtsey. She later curtseyed to Prince Philip when she met him at the White House after JFKs funeral and explained she was no longer the wife of a head of state.

Crowds lined the streets again. She should use the Queenmobile more often, as she did before, so people can se her. I guarantee that people will meet up, but that will of course be a security nightmare for the police, as it was at Windsor last month.

This is a Queen who used to go on walkabouts constantly from 1970 till 2012, and people are still showing up with their flowers unaware that she's not doing it anymore. I know of several people (young and old) who have been disappointed, but people should know that she is 90 and that we have to think about security.